Non-skid sectional tire-chain



E. A. GAHRING. NON-SKID SECTINAI. TIRE CHAIN. APPLICATION FILED MAY 29, I9I6.

I Patented Aug. 3,1926., l 2 SHEETS-SHEET I.

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FREDERICK A. GAHBING, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR. OF ONE-HALF TO AXEL ANOERSON OF MINNEAPOLIS, MINNESOTA.

NoN-sinn SECTION-AL Tran-CHAIN.

-tain new and useful Improvements in Non- Skid Sectional T ire-Chains; a'ndl do hereby declare the following to be a full, clear, and exact description of thefinvention, suh as will enable others skilled in the art to which it gppertains to mkeand use the same.

y present invention has for its object to provide van extremely 'simple and highly* efficient non skid tire chain especially adapted vfor application,rv to the pneumatic tires of automobiles, but adapted, neverthen less, for more general use; and.to such ends,

generally stated, the invention consists of the novel devices and combinations of de- Vices hereinafter described and defined in the claims.

` like characters indicate like parts throughout the several views. Referring to the drawings:

Figure l is a sidev elevation showing the complete tread chain applied to the pneumatic tire of an automobile wheelg.

.F ig. 2 is a fragmentary section on the line [v2 m2 of Fig. l; a v

Fig. 3 is a plan view of the parts found in the vicinity of the line marked a w on Fig. l, showing the parts on a larger scale than in Fig. i; v

Fig. 4tis an enlarged section taken on the line m4 m4 of Fig. l showing also one of the tread plates in section;

Fig. 5 is a fragmentary vertical section taken on theline m5 of Fig. 4;

I Fig. 6 is a view corresponding to F ig. 3

I but illustrating'a slightly modified form of the so-called tread plates; and

F ig. 7 is a section taken on the line m7 ai? of Fig.A 6.

The lnumeral l indicates an automobile' wheel of the usual or well known construction and the numeral 2 a pneumatic tire con- .i Specification of Letters `Patent.

.or roadbed (see particularly a).

l tread chains rateamaaagl a, ieee.

appiication inea may 2e, 191e. serial in: 100asa nected thereto in the usual or any suitable way. Each yof the two sections of the complete tread chain comprises laterally spaced connecting chains 3, connected at suitable .points by transverse chains l having as their intermediate links, channel-shaped tread plates 5. These channel-shaped tread plates 5 have out-turned flanges, the outer edges of which a're concave, so that the end portions only thereof, rest upon the ground The backs of the said tread plates are curved to fit the periphery ofthe tire and their ends are reversely curved so that no sharp parts will be'exposed for engagement with the tire, even when the tire has flattened considerably. In Fig. 4, the dotted line'misa horizontal line that intersects the most depressedA portion of the top of 'the 'tread plate, and here it is importantI to note that the pivotal connection betweenthe saine and` the connected links of the cross or transverse chains a are entirely above the said line s0 that said pivotal connections will not be destroyed even when the depending flanges of the tread plates are worn oif to the said dotted line or to a line in which the depressed portions of the backs of said tread plates will bear upon the ground. The depending flanges of the tread plates are preferably reversely bulged, either as shown in Fig. 3, or to the greater -extent shown in Fig. 6. For an important reason, the cross chains 4 which are at the ends of the connecting chains 3, are longer than the intermediate crfoss chains, so that the end por i tions of the said ch-ains 3 will be brought considerably inward toward the axis of the wheel.

The laterally spaced connecting chains of each of the two sections are connected to a U-shaped anchoring yoke 6. These anchering yokes 6, at their crotches, are preferably covered with rubber hose 7, or the like, to prevent marring o'f the spokes when they are placed straddle thereof, as shown in Figs.

l and 2. The chains 6, at their other ends,

are attached to buckle-equipped straps 8,l i

preferably of leather. These straps A8 may be passed through the end links of said chains 3 and they are then tightened in an opposite direction around the same spokes to which the yokes 6 are applied. When the applied to the tirey and wheel, as just stated, and as best shown in ej y :wennen Figs. l and 2, they will be securely held against weeping .or circumferential move# ments, find hence, will not allow the tire to spin within the chains and thus teer off the treed oli' the tire. The yolres G, inaddition te the functions already noted, will hold the ends olf the chains (i equally spaced on opposite sides of the tire. The treed plates give n very high degree of traction and prevent sltiddingg. rlfhey may be easily applied and easily removed. Moreover, if one of the traction Wheels be sunk deep into :L mud hole or rut, one of the tread chain seetihns een lie applied te' the exposed upper portion thereof end used to get the wheel out of the rut er hole.

i. A, non-skid device l'or tires includin;r eircuinferentially spaced transversely ex tended nieteltreud plates that are channel- Shaped in Cross section :md have outstanding ilenges, the edges of which are concevely curved so that only the ends theremc will primarily engage the ground.

2. A non-skid tire chain having transverse chain sections including metal lic trend plates with, outtux'ned flanges exposed for eingegement with the ground, the seid flnnges heing in reverse convex arrangement converg-` ing at their ends, und the outer edges ot sind flanges being concave so that they engage the ground primarily at then' end portions.

il. A non-skid device for tires inclndiifn;` cireumferentielly spaced, transversely extended metal. plates that nre -lumnelslmpe in cross sectionend lieve laterally shaved ground-engaging flanges that are circumferentielly and inwardly howed to give the flanges of ezich channel ai mzrximuru distance at its intermediate portion and to extendthe ends of said flanges outward for engagement with the ground.y

In testimony whereof I nix my signature in presence el. two witnesses.

FREDICRKLK A. HHKING. Witnesses:

CLARA DnMARseT, B. G. WHEELER. 

